Home / 309,399.20-426,997.58-173,459.37

Finding the Fourth Proportional to 309,399.20, 426,997.58 and 173,459.37

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Solution

The fourth proportional to 309,399.20, 426,997.58 and 173,459.37 is: 239,388.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    309,399.20 : 426,997.58 = 173,459.37 : x
  2. Step 2: Convert to fraction form
    309,399.20/426,997.58 = 173,459.37/x
  3. Step 3: Cross multiply
    309,399.20x = 426,997.58 × 173,459.37
  4. Step 4: Simplify right side
    309,399.20x = 74,066,731,952.27
  5. Step 5: Solve for x
    x = 74,066,731,952.27/309,399.20
  6. Step 6: Final answer
    x = 239,388.90

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.